My girlfriend works at SeaWorld as an educator, and I have been stealing her literature, and helping her study. About a week ago, we read from SeaWorld's Zoology Department that their dissections showed no actual difference in colored Linckia Laevigata. The Linckia Laevigata comes in different blues, and oranges and gets its color from a blue pigment (linckiacyanin) and yellow carotenoids. This results in deep blue, light blue, orange, etc. With the addition of utilizing external reproduction (floating egg & fertilization), an orange linckia could easily breed with a blue linckia. However, it is not CONCRETE that breeding of different pigment amounts results in mutant colors. Basically, there's no color chart 
I've had a blue linckia for months now... very cool to watch. I also have a fire shrimp who doesn't clean  but will climb on my hand when I feed him everyday. And for some reason, he takes to frozen silver sides over any other food. He's funny as hell, but not very social (unless it's feedin' time).
Cheers,
-Tank Boy
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60g: Kole Tang, Royal Gramma, Fire Shrimp, Cleaner Shrimp, Paired Ocellaris Clowns (Frogspawn Host), Lawnmower Blenny, Blue Linckia, Xenia, Leather, Brain, Green Star Poly, Various Button Poly & Shrooms
20g: 4-Stripe Damsel, Ruby Scat, Kenya Tree
10g: Yellow Tail Damsel & Aptaisia(LOL) | 
